Kindly see the option called resolution center under customer support tab on the top.
or
http://resolutioncentre.ebay.in/
Sign in and then u can open a case against seller.
In this case, ebay.in will help you get item or replacement or refund.
Case takes 5-30 days in processing. But very action is recorded with ebay, so nothing to worry.
If seller does not reply in 10 days and u u honest, then u win the case and get refund. Simple.
Hope this helps.
Thank you.